- for (j = 0; j < model->analog_channels; j++) {
- if (cg != devc->analog_groups[j])
- continue;
- state->analog_channels[j].vdiv = idx;
- g_ascii_formatd(float_str, sizeof(float_str), "%E",
- (float) (*model->vdivs)[idx][0] / (*model->vdivs)[idx][1]);
- g_snprintf(command, sizeof(command),
- (*model->scpi_dialect)[SCPI_CMD_SET_VERTICAL_DIV],
- j + 1, float_str);
- if (sr_scpi_send(sdi->conn, command) != SR_OK ||
- sr_scpi_get_opc(sdi->conn) != SR_OK)
- return SR_ERR;
- break;
- }
+ if ((j = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0)
+ return SR_ERR_ARG;
+ state->analog_channels[j].vdiv = idx;
+ g_ascii_formatd(float_str, sizeof(float_str), "%E",
+ (float) (*model->vdivs)[idx][0] / (*model->vdivs)[idx][1]);
+ g_snprintf(command, sizeof(command),
+ (*model->scpi_dialect)[SCPI_CMD_SET_VERTICAL_DIV],
+ j + 1, float_str);
+ if (sr_scpi_send(sdi->conn, command) != SR_OK ||
+ sr_scpi_get_opc(sdi->conn) != SR_OK)
+ return SR_ERR;